South Bend, Indiana USA | networketi.com SNOW/ICE CONTROL INSTALLATION MANUAL | PART NO. 23918 REV B
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a location of the building not easily or readily accessible
by ofce personnel who may well be in a better location
than building maintenance personnel to assess the need
to melt ice or snow from walkways or parking areas.
Also available for the GF Pro system is an optional
temperature sensor assembly which senses the
temperature at the cable end and regulates the Hold-On
Time period once precipitation has ended and the call
for heat has passed. Installed with the cable end placed
at or near the heat tape, the optional temperature sensor
assembly or thermistor is a high-temperature shut-off
and regulates the Hold-On Time period by automatically
suspending an active heating cycle if at any time during
that cycle, the temperature at the sensor end rises to
above 45°F. Then, if, during the Hold-On Time period, the
temperature drops to below 44°F, the heating cycle will
resume automatically and continue until the end of the
Hold-On Time period as set on the face of the unit. This
not only lowers system operating costs but also protects
the heat tape from over-heating.
As the placement of the RCU–4 remote control unit
is a key factor in the overall conguration of, as well
as customer satisfaction with, the GF Pro system, it is
important that it be installed as part of the system initially.
Similarly, as the temperature sensor assembly monitors
the temperature at the point of the cable end to keep the
heat tape from over-heating, so it is necessary, for best
results, to lay the temperature sensor at the same time as
the heat tape to ensure proper placement and routing.
It is not recommended to try and retrot either of these
optional assemblies once the system is already installed
and operational.
To ensure proper installation and to facilitate placement,
wiring, routing, and function of either or both the optional
RCU–4 or temperature sensor, it is strongly advised and
suggested that these assemblies, whether together or
individually, be installed with the system initially rather than
retrotted afterwards. Use the information below to order
either or both of these important optional components.
Order # Description
21358 Optional Remote Control Unit RCU–4
19272 Optional Temperature Sensor Assembly
To order either or both of these optional components for
your system, contact the ETI Sales Department between
the hours of 8:00 a.m. and 5:00 p.m. Eastern Time.
INSTALLING THE CONTROL
Install this unit in compliance with National Electrical Code
(NEC) standards, as well as all other local and applicable
electricalcodesforyourarea.Priortobeginninginstallation,
make sure that the facility has properly sized electric
service and breaker. For additional information regarding
electrical ratings and facility power requirements, refer to
the Specications section of this manual.
This unit is intended for wall mount installation only.
The wall used for the installation should be capable of
supporting four times the weight of the unit, or about 20
pounds. Although the IP 66, NEMA 4X weather-resistant
enclosure can be installed outside, make sure to install the
unit directly to a solid, stable surface. Before connecting
any optional remote control unit or system sensor(s),
as applicable, to the terminal block inside the unit, rst
install the box itself. Internal connections for any optional
remote control unit or system sensor(s) will be made in
the next section.
During installation, leave all mounting hardware loose enough to allow for slight adjustments to component
placement. Once all components and the front panel and clear plastic cover have been installed, then, as
the nal step in installation, fully tighten all mounting hardware and weather-tight ttings. Make sure all
connections and ttings are snug, air-tight, and water-tight.
NOTE:
